Global Patent Index - EP 0936683 A4

EP 0936683 A4 20001122 - REFLECTION TYPE LIGHT EMITTING DIODE

Title (en)

REFLECTION TYPE LIGHT EMITTING DIODE

Title (de)

REFLEKTIERENDE LICHTEMITTIERENDE DIODE

Title (fr)

DIODE ELECTROLUMINESCENTE DE TYPE REFLECHISSANTE

Publication

EP 0936683 A4 20001122 (EN)

Application

EP 98905698 A 19980227

Priority

  • JP 9800826 W 19980227
  • JP 17169197 A 19970627
  • JP 24919797 A 19970912
  • JP 33569797 A 19971205

Abstract (en)

[origin: WO9900852A1] A reflection type light emitting diode which is constituted in such a way that a concave reflecting surface (18) having substantially a paraboloid of revolution is provided on the light emitting surface side of a light emitting element (11), and the center of the light emitting surface is positioned to the focal point of the reflecting surface (18). In addition, a radiant surface (19) is provided on the back side of the element (11), and a projecting section (21) which is protruded from the radiant surface (19) is formed on the periphery of the surface (19). Such a light emitting diode is manufactured by a transfer mold method in which the reflecting surface (18) is formed by means of a die and the radiant surface (19) is formed by means of a punch. When the diode is manufactured, no air layer remains in the part of the punch corresponding to the radiant surface (19), because the residual air on the upper surface of the punch gathers in the part of the punch corresponding to the projecting section (21).

IPC 1-7

H01L 33/00; H01L 25/075

IPC 8 full level

H01L 33/54 (2010.01); H01L 33/60 (2010.01)

CPC (source: EP)

H01L 33/54 (2013.01); H01L 33/60 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/48247 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

WO 9900852 A1 19990107; EP 0936683 A1 19990818; EP 0936683 A4 20001122; TW 385557 B 20000321

DOCDB simple family (application)

JP 9800826 W 19980227; EP 98905698 A 19980227; TW 87104703 A 19980330